set term gif animate
set output "3d.gif"
set xlabel "x"
set ylabel "y"
set zlabel "z"
f(x,y)=10*x**2 + y**3
set isosamples 100
set view 60,60
set style fill solid 1.0
splot f(x,y) title "$z=10x^2+y^3$" with pm3d
splot f(x,y)+1 title "$z=10x^2+y^3$" with pm3d
set output
